tiger swallowtail definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of various swallowtails (genus Papilio), esp. a large, yellow-and-black butterfly (P. glaucus) of E North America
tiger swallowtail definition by American Heritage Dictionary
A large swallowtail butterfly (Papilio glaucus) of eastern North America, mostly yellow with narrow black bands across the wings.